Fluorescent dye blends

Details Fluorescent dye blends Fluorescent dye blends

C - Chemistry, Metallurgy

09

K

C09K 11/06 (2006.01) C08K 5/00 (2006.01) C09B 67/00 (2006.01) C09B 67/22 (2006.01)

Patent

CA 2303032

A fluorescent yellow article containing a blend of an N,N'-disubstituted 3,4:9,10-perylenebis (dicarboximide) dye and a fluorescent yellow-green dye soluble in a polymeric matrix and meeting the chromaticity requirements of CIE and ASTM and having a fluorescence luminance factor of greater than 5, as well as a method of preparing such articles is described. Also described is a fluorescent retroreflective article containing a color layer having first and second sides, wherein the article includes retroreflective elements on one side of the color layer or a retroreflective base sheet disposed on one side of the color layer, where the color layer includes the above-mentioned fluorescent yellow article.

L'invention concerne un article jaune fluorescent contenant un mélange de colorant N,N'-disubstitué 3,4:9,10-pérylènebis(dicarboximide) et de colorant jaune-vert soluble dans une matrice de polymères, remplissant les normes de chromaticité de la CIE (Commission internationale de l'éclairage) et de l'ASTM et possédant un coefficient de luminance de fluorescence supérieur à 5; ainsi qu'un procédé de préparation de cet article. L'invention concerne également un article rétroréfléchissant fluorescent contenant une couche de couleur possédant un premier et un deuxième côté, l'article comprenant des éléments rétroréfléchissants d'un côté de la couche de couleur ou une feuille de base rétroréfléchissante disposée d'un côté de la couche de couleur, la couche de couleur comprenant l'article jaune fluorescent précédemment cité.

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